#!/bin/bash

# Slackware build script for opendoas

# Copyright 2021-2022 K. Eugene Carlson  Tsukuba, Japan
# All rights reserved.
#
# Redistribution and use of this script, with or without modification, is
# permitted provided that the following conditions are met:
#
# 1. Redistributions of this script must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
#
#  THIS SOFTWARE IS PROVIDED BY THE AUTHOR "AS IS" AND ANY EXPRESS OR IMPLIED
#  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
#  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO
#  EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
#  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
#  PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
#  OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
#  WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
#  OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
#  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

# 20220210 bkw: Modified by SlackBuilds.org, to use the correct github
# download URL.

cd $(dirname $0) ; CWD=$(pwd)

PRGNAM=opendoas
SRCNAM=OpenDoas
VERSION=${VERSION:-6.8.2}
BUILD=${BUILD:-1}
TAG=${TAG:-_SBo}
PKGTYPE=${PKGTYPE:-tgz}

unset TIMESTAMP
unset SHADOW

# Use PERSIST=yes to enable timestamp-based password persistence. Upstream
# considers this feature to be "new and potentially dangerous."
[ ${PERSIST:-no} = yes ] && TIMESTAMP="--with-timestamp"

# Use PAM=no to enable shadow authentication even on systems with PAM
# installed. If shadow is not set, then doas will compile with PAM support
# automatically if PAM is installed.
[ ${PAM:-yes} = no ] && SHADOW="--without-pam"

if [ -z "$ARCH" ]; then
  case "$( uname -m )" in
    i?86) ARCH=i586 ;;
    arm*) ARCH=arm ;;
       *) ARCH=$( uname -m ) ;;
  esac
fi

if [ ! -z "${PRINT_PACKAGE_NAME}" ]; then
  echo "$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.$PKGTYPE"
  exit 0
fi

TMP=${TMP:-/tmp/SBo}
PKG=$TMP/package-$PRGNAM
OUTPUT=${OUTPUT:-/tmp}

if [ "$ARCH" = "i586" ]; then
  SLKCFLAGS="-O2 -march=i586 -mtune=i686"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "i686" ]; then
  SLKCFLAGS="-O2 -march=i686 -mtune=i686"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "x86_64" ]; then
  SLKCFLAGS="-O2 -fPIC"
  LIBDIRSUFFIX="64"
else
  SLKCFLAGS="-O2"
  LIBDIRSUFFIX=""
fi

set -e

rm -rf $PKG
mkdir -p $TMP $PKG $OUTPUT
cd $TMP
rm -rf $SRCNAM-$VERSION
tar xvf $CWD/$SRCNAM-$VERSION.tar.gz
cd $SRCNAM-$VERSION
chown -R root:root .
find -L . \
 \( -perm 777 -o -perm 775 -o -perm 750 -o -perm 711 -o -perm 555 \
  -o -perm 511 \) -exec chmod 755 {} \+ -o \
 \( -perm 666 -o -perm 664 -o -perm 640 -o -perm 600 -o -perm 444 \
  -o -perm 440 -o -perm 400 \) -exec chmod 644 {} \+

# Pass in shadow support if PAM is not installed. OpenDoas defaults to PAM
# authentication otherwise.
if [ ! -L /lib${LIBDIRSUFFIX}/libpam.so.? ]; then
  SHADOW="--without-pam"
fi

# Passing BUILD from the command line otherwise causes the build to fail (the
# configure script uses the variable name).
env -u BUILD ./configure \
  --prefix=/usr \
  $SHADOW \
  $TIMESTAMP \
  --mandir=/usr/man

# 20220210 bkw: actually use SLKCFLAGS.
sed -i "s,-O2,$SLKCFLAGS," GNUmakefile

make
make install DESTDIR=$PKG
strip $PKG/usr/bin/*
gzip -9 $PKG/usr/man/man*/*

mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION
cp -a \
  LICENSE README.md \
  $PKG/usr/doc/$PRGNAM-$VERSION
cat $CWD/$PRGNAM.SlackBuild > $PKG/usr/doc/$PRGNAM-$VERSION/$PRGNAM.SlackBuild

mkdir -p $PKG/install
cat $CWD/slack-desc > $PKG/install/slack-desc

chmod 4711 $PKG/usr/bin/doas

# If PAM support is enabled, rename the package's PAM file to doas.new.
if [ -f "$PKG/etc/pam.d/doas" ]; then
  mv $PKG/etc/pam.d/doas $PKG/etc/pam.d/doas.new
fi

# Delete the new configuration file and its directory if PAM_FILE=yes was not
# used. For Slackware 15.0 users, doas can use PAM authentication provided that
# /etc/pam.d/other and /etc/pam.d/system-auth have not been altered from the
# state in which they are shipped. Writing new PAM configuration files was
# deprecated after the current release of OpenDoas. To allow OpenDoas to write
# a configuration file anyway, use PAM_FILE=yes.
[ ${PAM_FILE:-no} != yes ] && rm -rf $PKG/etc

if [ -f "$PKG/etc/pam.d/doas.new" ]; then
  cat $CWD/doinst.sh > $PKG/install/doinst.sh
fi

cd $PKG
/sbin/makepkg -l y -c n $OUTPUT/$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.$PKGTYPE
